Roller-bearing.



100.024,000. PATBNTED MAR. s1', 1003.

B.. L. ELLERY.

ROLLER BEARING.

APPLICATION FILED JUNE 7, 1902. N0 MODEL.

UNITED 1 STATES PATENT OFFICE. f1

ROBERT 'L.ELLEEY, OF PORTSMOUTH, NEW HAMPSHIEE.

ROLLER-BEARING.

SPECIFIGATION forming part of Letters Patent N o. 724,090, dated March 31, 1903. i Application filed June 7, 1902. Serial No. 110,607. (No model.)

To a/ZZ whom it may concern.- 13e it known that I, ROBERT L. ELLERY, a citizen of the United States, residing at Portsmouth, in the county ofy Rockingham and State of New Hampshire, haveinvented new and useful Improvements inRoller-Bearings, of which thefollowing isa specification.

The object of this invention is to provide a cheap ,si1nple, and durable antifriction side bearing for car-trucks, the same being particularly adapted to car-trucks which are pivotally attached tothe body of the car.

' The invention consists, in an antifrict-ion side bearing for car-trucks, of a series of conical journalless rollers, their axial centers being located in the same plane and radial to the arc of a circle, in combination with'a slottedspacing-frame adapted to receive said con ical rollers and keep them apart.

The invention again consists in the instrumentalities hereinbefore set forth, incombination with means to hold said spacing-frame inthe same plane as that in which the axial centers of thelgrollers arelocated.

The inventon again consists in a base-plate provided with a guidewayhaving curved side walls', aseries of conical journalless rollers movable insaid guideway, the axes of said rollers located in the same plane and radial to the arc of a circle, in combination with a slotted spacing-frame adapted to receive the conical rollers and keep them apart, said spacing-frame resting upon the side wallsof the base-plate and being thus heldin a plane pass ing through the axial centers of the rollers. The invention again consists in the instrumentalities hereinbefore set forth, in combination with a top plate adapted to be fastened to the car-body and resting upon said rollers. The invention finally consists in cert-ain details of, construction hereinafter particularly'described, and set forth in the claims.

Referring to 4the drawings, Figure 1' is a plan'view of a base-plate adapted to be fas# tened to the truck of the car constructed-in accordance with`\1ny invention. Fig. 2 is a vertical section taken f on line 2 2 of Fig. 1. Fig. 3 is a detail plan View of the spacingframe with the rollers in position therein. Fig". 4 is a section taken on line 4 4 of Fig.'3.

Fig..5 is a detail plan View of the top plate.

Fig. 6 is a transverse section taken on line 6 6 of Fig. woning toward the right in sain figure. Fig. 7 is a longitudinal central section taken through the parts illustrated in Figs. 1

to 6, inclusive, said parts being assembled in accordance with my invention.- Fig. 8 i`s a transverse section o f the parts shown in Eig.`

with holes 11, through which bolts may be inserted to fasten said base-plate to the truck of a car. The top of the base-plate 10 isprovided with a curved guideway 12, having side Walls 13'14. formed upon curves Whose axial centers are coincident with the pivotal center of a car-truck and having end walls 15 15 radial to said side Walls 13 and 14. Opening out of the bottom of the curved guideway 12 are dust-pockets 16 16 to receive the dust which may enter the guideway 12 and prevent the same from interfering with the operation of the conical rollers hereinafter described. Theconical rollers 17 rest upon the baseplate 10 in the curved guideway 12. These rollers in'operation rotate with their peripheries bearingupou the baseplate 10 in the guideway 12 and have their axial centers all located in the same horizontal plane. The peripheries of said rollers converge toward a common point, said point being the 'pivotal center of the truck and the center about which the curved side walls 13 and 14 are described. The rollers 17 are kept apart by a spacing-frame 18, provided with slots 9 to receive said rollers. The spacing-frame 1S rests upon the curved side walls 13 and 1+i and isv thus held in the same horizontal plane as the axial centers of said rollers, said spacingframe being provided with radial w-alls 19,

lying between the rollers 17.

At each end of the spacing-frame 18 are provided radial end flanges 2O 20, which extend upwardly fron1 said base-plate toward and almost into contact with the under side ofa top plate 2l. The top plate 2l is provided with holes 22, through which screws or bolts may be passed to secure said top plate to the body of a car. Said top plate rests upon the rollers 17 and has curved side walls 23 24 projecting downwardly therefrom adjacent to and outside the base-plate side walls 13 and 14. The side Walls 23 and'24- are formed upon the arcs of circles Whose centers l are the pivotal center of the truclp to which the device is attached, the inner tapes of said Walls 23 and 2C forming guides for the spacing-frame 18 to guard4 against lateral displacement of said spacing-frame.

At each end of the baseplat-e is fastened a dust-pad 25, preferably of felt, and extend ingrupwardiy from said hase-plate to cont-act with the under side of the top plate 2l. While said dust-pads may be rigidly fastened to the hase-plate l0, as shown at the left of Fig. 7, I prefer to support the same upon a spring 26, as shown at the rightof Fig. 7, said-spring being fastened to the base-plate 10, and thus yielding to any inequalities upon the under surface of the top plate 21, and also as said pads wear the springs will force' them upwardly to compensate for said wear, always keeping the upper surface of the pad against the under su rface of the top plete 2l .and prefventing the dust from entering at the ends of said l.base-plate and top plate and getting into the curved guidewaylt? and among the rolln ers 17.

The operation of my improved roller-bear ing is as follows: The base-plate being fast to the truck, the top plate being fast to the car-body, and lthe rollers free to roll along the guideway 12and between said base-plate and top plate, said rollers being kept apart h'y the spacingframe 18', it is evident that as the truck turns upon its pivot with relation Vto the car-body, or'vice versa, the plates 21 and 10 will move longitudinally with relation to each other and the rollers 17 and spacing'u frame 18 willmove between said plates in a manner Well known to those skilled in the art, and as the rollers 17 move upon the haseplate 10, said rollers being conical in form and converging toward the pivotal center of the truck, it is evident that they will roll without sliding orgrindingfbetween the two plates, thus reducing the friction from a sliding friction to a theoretically perfect or rolll, ing friction;4

It will `be seen that my improved rollerbearing for car-trucksisvery cheap, strong,

v i the'friction v`between the car-truck and caranddurable in its construction and reduces bodyfy toa minimum and is provided with de vices whereby the danger ofdust and dirt collecting in the guideways or upon-the hearing-surface of the plates, thus interfering with the action of the rollers, is reduced. to a minimum. 1'

The object of j the upwardly-extended radal'end danges 20 20 upon the spacingframe 18 is to prevent said frame from tipping upwardly away from' its normal position, it bef' j ing evident'that said fianges will contact with the under side of the top plate 2l and prevent the spacing-frame from becoming displaced by tipping upward longitudinally thereof. Y y

Having thus descried-niy invention, what l claim, and desire by Lef/ters Patent to secure, is-jl. in an antifriction side hearing for cartrucks, a hase-plate provided with a guideway having curved side Walls, a series of conical journalless rollers movable,in said guideway, the axes of said rollers'located in the same plane and radial to the are of a circle, and a slotted spacing-frame adapted to receive said conical rollers and keep them apart, said spacing-rame resting upon and extending later ally entirely across the top of said side walls and held'by said side Walls in said plane.`

2. 1n an antifriction side bearing for cartrucks, a base-plate provided with a guideway having curved side walls, a series of conical journalless rollers 'movable in said guideway, the axes of said rollers located in the same plane and radial to thearc of acircle, a slotted spacing-'frame adapted to receive said conical rollers and keep them apart, said spacingeframe resting uponand extending laterally entirely across the top of said side Walls and held by said side walls in said plane, and

the axes ol. said rollers located in the same plane and radial to the arc of a circle; a top plate adapted tofhe vfastened to a car-body, resting upon sairfplers, and ay slotted spacing-frame adapted'to receive said rollers and keep them apart, said spacing-frame resting upon said side Walls and provided with radial end flanges extendingupwardly toward said top plate for the purpose specified.

Ll. ln an antifriction side bearing forjcartrucks, a base-plate provided with a guideway having curved side walls, a series of conical journallessrollers movable in said guideway, the axes of said rollerslocated in thesame plane and radial to the arc of a. circle, a slotted spacing-frame adapted to receive said conical rollers and 4keep them apart, said, spacing-frame resting upon-and extending laterally entirely across thetop of saidfsi'de walls and held by said side walls in said plane, and a top plate adapted to be'fastened toa carhody rest-ing upon saidV rollers and having carved side walls extending downwardly displacement thereof. i Y

5. In an antifriction side bearing for cartrucks, a base-plate provided with a guideway Y. having curved side Walls, a series of `conical `Journal'lessrollers movable in vsaid guideway, l

the axes of. said rollers located in the same plane and' radial to the are of Aa circle, a slots* ted spacing-frame adapted to receive said com ical rollers and keep them apart, said spac-V resting npon said side walls and.

held thereby in said plane, a top plate adapted to be'fastened Vto a car-body resting upon said rollers and having curved side walls eX- tending downwardly therefrom adjacent to and outside of said base-plate side walls, and dust-pads fast to said base-plate and project` ing upwardly therefromto contact with the under side of said top plate.

6. In an antifriction side bearing for cartrucks, a base-plate provided with a guideway having curved side walls, a series of conical journalless rollers movable in said guideway,

the axes-of said rollers located in the same plane and radial to the arc of a circle, a slot- `ted spacing-frameadapted to receive said conical rollers and keep them apart, said spacing-frame resting upon said side walls and held thereby in said plane, a top plate adapted tov be fastened to a car-body resting upon said' rollers and having curved side walls ex. tending` downwardly therefrom adjacent to and outside of said base-plate side walls, and

vopening` downwardly from said guideway, a

series of conical journalless rollers movable in said guideway, the axes of said rollers located in the saine plane and radial to the arc of a circle, and a slotted spacing-frame adapted to receive said conical rollers and keep them apart, said spacing-frame resting upon said side walls and held thereby in said plane.

hereunto set l my hand in presence of two subscribing wit In testimony whereof I have DBSSBS.

` ROBERT L. ELLERY.

Witnesses:

CHARLES IS. GOODING, ANNIE J. DAILEY, P 

